#31397C#31397C

#31397C is a dark, moderate blue. Relative luminance 0.050; OKLCH L 37.6% C 0.113 H 274.5°. Best body text is #FFFFFF at 10.46:1 contrast (WCAG AA passes).

Color values

HEX	#31397C
RGB	rgb(49, 57, 124)
HSL	hsl(234, 43%, 34%)
HSV	hsv(234, 60%, 49%)
CMYK	cmyk(60.5%, 54%, 0%, 51.4%)
CIE-LAB	lab(26.83, 18.44, -39.27)
CIE-LCH	lch(26.83, 43.39, 295.16°)
OKLab	oklab(37.64% 0.0089 -0.1124)
OKLCH	oklch(37.64% 0.113 274.5)
XYZ	xyz(6.3667, 5.0340, 19.7010)
Luminance	0.0503 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31397C #7C7431

analogous

#315F7C #31397C #4F317C

triadic

#31397C #7C3139 #397C31

tetradic

#31397C #7C315F #7C7431 #317C4F

square

#31397C #7C315F #7C7431 #317C4F

split-complementary

#31397C #7C4F31 #5F7C31

monochromatic

#0E1124 #202550 #31397C #424DA8 #656FC2

Accessibility & contrast

On white

10.46

#31397C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#31397C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31397C

10.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31397C	#FFFFFF	#000000	##FFFFFF
##31397C	1.00	10.46	2.01	10.46
#FFFFFF	10.46	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#13437E

Deuteranopia (green-blind)

#023C7B

Tritanopia (blue-blind)

#004854

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #31397c;
/* rgb */ color: rgb(49, 57, 124);
/* oklch */ color: oklch(37.6% 0.113 274.5);

Tailwind

colors: {
  custom: {
    50: '#716fa2',
    500: '#31397c',
    950: '#000000',
  },
}

SCSS

$custom: #31397c;
$custom-light: #716fa2;
$custom-dark: #000000;

JSON

{
  "hex": "#31397c",
  "rgb": {
    "r": 49,
    "g": 57,
    "b": 124
  },
  "hsl": {
    "h": 233.6,
    "s": 43.353,
    "l": 33.922
  },
  "oklch": {
    "l": 0.37636,
    "c": 0.11277,
    "h": 274.5
  },
  "luminance": 0.05034
}

Semantic roles & 50–950 ramp

primary

#31397C

secondary

#AAA25F

accent

#C655D3

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#08070F

muted

#7B7A7F

Preview Lab

Preview with #31397C

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →